WESTFIELD CAPITAL MANAGEMENT CO LP - MERSANA THERAPEUTICS INC ownership

MERSANA THERAPEUTICS INC's ticker is MRSN and the CUSIP is 59045L106. A total of 159 filers reported holding MERSANA THERAPEUTICS INC in Q4 2020. The put-call ratio across all filers is 0.44 and the average weighting 0.9%.

Quarter-by-quarter ownership
WESTFIELD CAPITAL MANAGEMENT CO LP ownership history of MERSANA THERAPEUTICS INC
ValueSharesWeighting
Q2 2021$28,638,000
-11.4%
2,108,810
+5.5%
0.17%
-14.4%
Q1 2021$32,338,000
+162.8%
1,998,638
+332.3%
0.20%
+175.3%
Q4 2020$12,304,000462,3780.07%
Other shareholders
MERSANA THERAPEUTICS INC shareholders Q4 2020
NameSharesValueWeighting ↓
Sarissa Capital Management LP 4,005,600$64,810,0006.21%
Bain Capital Life Sciences Investors, LLC 3,695,667$59,796,0003.39%
COMMODORE CAPITAL LP 429,228$6,945,0002.77%
ACUTA CAPITAL PARTNERS, LLC 357,689$5,787,0002.09%
Avoro Capital Advisors LLC 6,800,000$110,024,0001.90%
Ghost Tree Capital, LLC 450,000$7,281,0001.71%
RHO CAPITAL PARTNERS INC 796,458$12,887,0001.24%
Rock Springs Capital Management LP 2,775,127$44,902,0000.98%
Sio Capital Management, LLC 157,259$2,544,0000.52%
Bellevue Group AG 2,850,010$46,113,0000.49%
View complete list of MERSANA THERAPEUTICS INC shareholders